In Xubuntu without any setup, in XFCE i have refresh rate for 1024x768@75HZ SAME as in Windows, i see it, becouse the border of screen matched with border of workspace. In LMDE i have too 1024x768@75HZ, but this is not same refresh rate (i know it from menu of my monitor Samsung LCD). It's near, but not same. Workspace is outside of monitor borders. Of course i can press AUTOSET button at monitor. But for more then five years i adaped for 75HZ as in Windows. I can't see not same 75Hz. Before Xubuntu i thought it's impossible to find same 75HZ as in Widows. But now i think it's possible! Can you help me, how can i "grab" my truth 75Hz (from Windows and Xubuntu) to LMDE?

P.S. I'am newbie in *nix, but i have experience with computer from time of MS-DOS 3.3, before windows 3.1 even.